/** Proofs GPU - Space and Time's cryptographic proof algorithms on the CPU and GPU.
 *
 * Copyright 2023-present Space and Time Labs, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#pragma once

#include <concepts>

namespace sxt::bascrv {
//--------------------------------------------------------------------------------------------------
// element
//--------------------------------------------------------------------------------------------------
template <class T>
concept element = requires(T& res, const T& e) {
  double_element(res, e);
  add(res, e, e);
  neg(res, e);
  cneg(res, 0);
  add_inplace(res, res);
  { T::identity() } noexcept -> std::same_as<T>;
  mark(res);
  { is_marked(e) } noexcept -> std::same_as<bool>;
};
} // namespace sxt::bascrv
